Saquib M. Effect of Coal Smoke Pollution on the Biomass and Chlorophyll Pigments of <i>Brassica juncea</i>. Ecoprint [Internet]. 2009 Jun. 3 [cited 2024 Apr. 24];15:1-6. Available from: https://www.nepjol.info/index.php/ECO/article/view/1935